Book/Report

FZJ-2019-01386

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Entwicklung eines ingenieurmässigen Simulationssystems zur Berechnung von Strahlenschutzparametern an Protonenbeschleunigern im Energiebereich bis 3 GeV

Wolfertz, B. (Corresponding author)FZJ*

1996
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag Jülich

Please use a persistent id in citations: http://hdl.handle.net/2128/21605

Report No.: Juel-3197

Abstract: This dissertation describes the development of the simulation software CASL (Computer Aided Shield Layout). It is used to calculate equivalent dose rates and fast-neutron fluxes for real expositions occuring at proton accelerators with a maximum particle energy of 3 GeV. The CASL algorithm provides a large variety of possibilities of data generation (e.g. pointdetector, linedetector, isodose etc.) by defining the shielding geometry and some physical parameters (e.g. particle current and energy, beam direction and source position etc.). Based on the Moyer model for the calculations of surface doses on very thick shieldings CASL uses an algorithm including data generated both statistically and numerically. Assuming a pointlike source distribution the attenuation behavior of high energy neutrons E $\geq$ 100 MeV is basis for the evaluation of doses and flux distributions inside the shielding. Low energy neutrons E < 100 MeV, which contribute considerably to the dose deposition in soft tissue, are taken into account for the calculation of the equivalent dose by dose factors computed with energy dependent neutron conversion factors. The performance and application of the simulation software CASL is pointed out. Examples are the shielding layout and optimization of the Cooler SynChrotron (COSY) at KFA Jülich, the simulation of radiation shielding parameters of "beam stops" of complex medium energy experiments, and calculations to determine the dimensions of the shieldings of the planned European Spallation Source (ESS) requiring a radiation attenuation of 30 orders of magnitude.

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Contributing Institute(s):

1. Publikationen vor 2000 (PRE-2000)

Research Program(s):

1. 899 - ohne Topic (POF3-899) (POF3-899)

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